Heating stove or furnace.



No. 767,738. PATENTED AUG. 16, 1904.

E. 0. DANIELS.

HEATING STOVE OR FURNACE.

APPLIOATION FILED FEB. 13, 1904. no 110mm. 2 SHEETS-SHEET z.

WITNESSES. INVENTOR.

No. 767,738. I

UNITED STATES Patented August 16, 1904.

PATENT OFFICE.

HEATING STOVE OH FURNACE.

SPECIFICATION forming part of Letters Patent No. 767,738, dated August 16, 1904.

Application filed February 13, 1904. Serial No.193,364. (N0 model.)

To all whom, it may concern:

Beit known that I, EUGENE ORA DANIELS, a citizen of the United States, and a resident of Toledo, in the county of ,Lucas and State of Ohio, have invented certain new and useful Improvements in Heating Stoves or Furnaces; and Ido hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and tothe characters of reference marked thereon, which form a part of this specification.

My invention relates to what are known as hot-air stoves or furnaces in which the air is drawn over heated surfaces and then discharged while at a high temperature through suitable outlet-fines to the surrounding atmosphere or into pipes leading to the rooms to be heated.

The object of my invention is to provide a novel construction of heating apparatus of the above class whereby the radiating-surface and heating capacity may be materially increased without interfering with the draft or requiring additional fuel; and it consists in a novel arrangement of numerous air-passages in the interior of the stove or furnace, into which cool air is drawn and thendelivered into the room in a highly-heated condition, and also in the arrangement of the passages for conducting the smoke. gas, and other products of combustion around these various air-passages in such manner that substantially all of the heat of combustion is taken up by said air passages before the smoke, &c., pass up the flue to the chimney.

Other objects of my invention will be apparent as the same is hereinafter more fully described.

The invention is fully described in the following specification, of which the accompany 'ing drawings form a part, in which Figure 1 is a central vertical sectional view of a stove embodying my lnvention. Fig. 2 is a plan view of one of the sections of airpassages; and Fig. 3 is a modified construction of my invention, showing the same as embodied in a furnace.

Referring to the drawings, A represents the base or ash-pit of a stove embodying my invention, which has the damper or draftdoor (4 provided in its front portion to provide for the removal of ashes and the feeding of air from the atmosphere into the fire-pot B through the grate I), both of which are supported by the inwardly flanged or converging portion of the ash-pit A.

An opening 0 is provided through the base A to the atmosphere and communicates with the central cold-air duct O, which extends longitudinally entirely through the stove and is adapted to be supported upon a flanged seat provided at the edge of said opening or in any other suitable manner.

A door Z) is provided in the front of the fire-pot B to enable fuel to be fed to the fire, should coal or wood be used, or to enable the gas-burner D, which I have shown as encircling the cold-air duct O, to be lighted.

In order to direct the course of the flame and products of combustion arising from the fire and cause the same to be deflected alternately against the outer casing E and the easing of the cold-air duct O as it ascends to find an exit from the upper portion of the stove to the chimney, I provide the baflle-plates E, arranged around the cold-air duct O one on the top of the other, the first being seated on an annular flange 0, provided on the casing of the duct O at a desired distance above the burner D and having its inner edge flush with said casing. The next plate E, which is provided with a series of legs or standards 6 for supporting the same in elevated position above said first plate, has its outer edge flush with the outer casing E of the stove, thus leaving a flue or space between its inner edge and the casing of the duct O for the flame and smoke to pass through. The number of these alternately-arranged baflle-plates E is mainly determined by the size of the stove and the distance between the fire-pot B and the radiating flues or air-passages F. I have shown three sets of these radiating air-passages, the same being designated F, F, and F, through which the air that is taken in at the bottom of the stove through the duct O is required to pass prior to its being expelled from the stove I00 into the room. The arrangemcm'. of the said air-passages is such that the radiating Hues of one series are disposed in vertical alinement close the external mouths of the air-passages F and F and the latter being similarly arranged with reference to the air-passages F. A removable lid is seated on a flange or other projection provided in the air-duct 0 between the internal mouths of the flues F and F and causes the air taken in through said duct C to be directed through the radiating flues F into the drum Ur, whence it is compelled to find an exit through the lines F back into the central air-duct C above the lid g. The air-duct C is again stoppered at a point above the fines F" by the removable lid it, and the air, which by this time has becomehighly heated, is forced through the fines F into the drum (1%, from which it is evenly distributed to the surrounding atmosphere through the multiplicity of apertures provided in the casing thereof.

WVhile I. have shown the stove embodying my invention as being provided with the drum G for causing the air taken in through the cold-air duct to be passed a number of times through the path of the smoke and flames arising from the fire and with the drum G for distributing the heated air to the atmosphere, it will be apparent that the lid 9 may be removed from the air-duct C and said drums G and G omitted, thereby enabling the heated air to have an unimpeded way through said duct until it reaches the lid 71/ and is radiated through the series of fines F, F-,-and F directly into the surrounding atmosphere. As the upper end of the air-duct C, which terminates immediately under the cap H, is left open, thelid may be removed therefrom, and thus permit a greater portion of the heated air, which had theretofore found an exit through the radiating air-passages, to pass through said open portion. The advantages to be derived from this feature of my stove are readily apparent, inasmuch as a greater or less heat ,can be expelled through the top of the duct C by the removal or insertion of the lid 71., thus greatly facilitating the cooking of articles thereon.

The usual exit-flue I is provided in the upper portion of the stove, through which the smoke and gases arising from the lire are permitted to escape to the chimney.

It will be noticed by reference to the drawings that I have shown the stove embodying my invention as comprising a series of sections, each of which, with the exception of the top piece and the section immediately above the fire-pot, have the upper edges of their outer and inner casings E and C annularly grooved, as shown in j, to receive the lower edges jof the next succeeding section, thus adapting the contiguous edges of said sections to be matched and tightly joined. It will be apparent that by this construction the baffle-plates E may be extended to any desired height and as many of the radiating sections F, F, F used as the space to be heated may require. I do not, however, wish to confine myself to this construction, as the heatingqualities of my stove would be equally efficient were the same made in any other suitable form or manner so long as the main features of construction are retained.

By reason of the arrangement of the parts comprising my invention the products of combustion that ascend from the fire and seek an exit from the stove through the flue I are first caught by the baffle-plates E and thrown alternately against the casing of the stove and the casing of the air-duct C, thus further heating the air that has been taken in through the opening 0 and partially heated by passing through the fire-pot B and causing a considerable quantity of heat to be radiated into the room from the lower portion of the stove. After the products of combustion have passed the baffle-plates E they are successively baffled and circulated among the air-passages F, F, and F, thus heating the air passing therethrough to a very high temperature before being expelled into the room.

The stove comprising my invention can be readily adapted for use as a furnace by inclosing the same within an outer casing which is connected by pipes with the rooms to be heated, as shown in Fig. 3. In this modified construction 1 represents the central air-duct, which takes its supply of air from a chamber 2, leading to the atmosphere; 3, the combustion-chamber, in which are mounted the baffle-plates 4L; 5, 6, and 7, the series of fines radiating from the air-duct 1; 8, the drum, with which the flues 5 and 6 communicate; 9, the hot-air-distributing drum, which may be eliminated, if desired, and 10 the outer casing of the furnace, by means of which the heated air is confined and caused to be expelled to the rooms to be heated through a series of radiating pipes 11. The passage of the air through the central duct 1 is impeded and caused to be directed through the fines radiating therefrom by means of the damper 12 and sliding lid 13, which are controlled from without the furnace by means of the rods 14 and 15, respectively.

It is obvious that such changes in the form, proportion, and. minor details of construction of the parts as fairly fall within the scope of my invention may be made without departing from the spirit or sacrificing any of the advantages thereof.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-- 1. In a heating stove or furnace, a vertically-disposed air-duct having an air-intake. a plurality of fines communicating with said air-duct and extending transversely of the stove or furnace, a portion of which fiues are adapted to take the air from said conduit and the others to return it thereto, and means for permitting the returned air to escape from the stove or furnace.

2. In a heating stove or furnace, an air-duct having an opening to the atmosphere through the bottom of said stove or furnace and extending through the fire-pot and combustionchamber thereof, a series of fiues radiating from said duct, one or more partitions in said duct between a portion of said fiues, connection between the external mouths of said divided flues for causing the heated air to be returned to said duct preparatory to its being finally expelled from said stove or furnace.

3. In a heating stove or furnace, an air-duct disposed vertically through and having its air-intake at the lower portion of said duct, a series of fiues radiating from said duct, a drum surrounding the casing of said stove or furnace adapted to inclose the external mouths of said fiues, a second series of fines radiating from said duct and communicating with the atmosphere, and means in said duct for diverting the heated air therefrom to said drum.

4:. In aheating apparatus, a vertical air-duct disposed centrally therethrough, a series of fiues radiating from said duct, a drum surrounding said apparatus and inclosing the external mouths of said fiues, means for directing the heated air from said duct to said drum, a second series of lines leading from said duct, and a perforated air-distributing drum inclosing the mouths of said second set of fines.

5. In a heating apparatus of the class described, an air-chamber extending substantially therethrough and having an air-intake opening at its lower portion, means associated with said chamber for causing the air therein to transversely traverse the heating-chamber of said apparatus a number of times, and means series of flues radiating therefrom and terminating exteriorly of the combustion-chamber of said stove or furnace, a series of bafiie-plates above the fire-pot without said chamber adapted to alternately deflect the heat and flames against the wall of said chamber and the casing of said stove or furnace, and means for causing the heated air to be expelled either through said fiues or the end of said chamber.

7. In a heating stove or furnace, an airchamber vertically disposed therein having an air-intake opening at its lower end, a series of fiues radiating from said chamber, means for causing the air in said chamber to be deflected through a portion of said tubes, means for causing said air to be returned to said. chamber through the other portion of said fiues, and means for expelling said returned air to the atmosphere.

8. In a heating stove or furnace, a centrallydisposed vertical air-duct extending therethrough, a series of fines radiating from said duct, a drum inclosing the external mouths of said fiues, a partition for directing the air in said duct through a portion of said fiues and returning it through the others, an air-distributing drum, a series of fiues leading thereto from said chamber, and a series of battleplates above the fire-pot without said duct, for the purpose described.

9. A heating stove or furnace comprising, in separate pieces, an'ash-pit, a fire-pot, an airduct extending vertically through said parts, an outer casing, a heat-baffiing section, a series of sections forming a continuation of said airduct and casing and having fiuesradiating from said duct, and a top section, the said parts having their contiguous edges so formed as to be matched and form tight joints, substantially as described.

In testimony whereof I havehereunto signed my name to this specification in the presence of two subscribing witnesses.

EUGENE ORA DANIELS.

Witnesses:

WILBER A. OWEN, O. W. OWEN. 

